KLM Royal Dutch Airlines is Certified as a 4-Star Airline for the quality of its airport and onboard product and staff service. Product rating includes seats, amenities, food & beverages, IFE, cleanliness etc, and service rating is for both cabin staff and ground staff.

As of early 2026, KLM Royal Dutch Airlines is certified as a 4-Star Airline by Skytrax, the international air transport rating organization. This rating reflects a high standard across both the airport and onboard product, as well as staff service. The 4-star designation indicates that KLM provides a consistently good quality of service and product across all travel classes, including seat comfort, catering, and cleanliness. KLM is particularly noted for its efficient hub operations at Amsterdam Schiphol and its distinctive World Business Class, which features the famous Delft Blue miniature houses. While it sits just below the elite 5-star category (reserved for airlines like Qatar or Singapore Airlines), KLM is widely regarded as one of the most reliable and high-quality full-service carriers in Europe, maintaining strong ratings for cabin safety and crew professionalism.